Condenser winding machine



Jun? 18, 1940@A f E. M; KILE- Erm."

CONDENSER WINDING MIACHINE y A Filed June 5, 1956 1i sheds-sheep 2 l -June 18, 1940. E. M. KILE Erm.

CONDEHSER WINDING MACHINE Filed June 5, .1936 l1 Sheets-Sheet 3 June 18, 1940. E. M. KlLE ErAL.

' CONDENSER WINDING MACHINE Filed June 5. 1956 1 .1 Sheets-Sheet 5 June 18, 1940.

E. M. KlLE ET AL CONDENSER WINDING MACHINE Filed June 5, 1936 1l Sheets-Sheet 6 Y' l "lill 779/7 AWM 207 H37 ww 202 200 `lune 18, 1940. E. M. KILE Er A1.

CONDENSER WINDING MACHINE Filed June 5. 1936 1l Sheets-Sheet 7 June 18, 1940. E. M. KILE Er AL 2,205,171

CONDENSER WINDING MACHINE Filed June 5, 1936 1l Sheets-Sheet 8 June 18, 1940. E. M. KILE ETAL CONDENSER WINDING MACHINE 11 sheets-sheet 9 Filed June 5, 1956 llO V.

efzM/f @we 5% June 18, 1940. E. M. KlLE El' AL Vcomawmszm wINvING MACHINE ll Sheets-Sheet 10 Filed June 5, 1936 ale/faul /i/ M June 18, 1940. E. M. KILE r-:TAL

CONDENSER WINDING MACHINE Filed June 5, 1936 1l Sheets-Sheet 11 Patented June 1.8, 1940 PATENT OFFICE CONDENSER WINDING MACHINE Eugene M. Kile and SmonKain, Chicago, lll., as-

sgnors to John E. Fast & Company, Chicago, lll., a corporation of Illinois Application June 5, 1936Serial No. 83,630

20 Claims. (Cl. 242-56) An object of this invention is to provide a machine for winding condensers from webs of metal foil and paper which automatically grips the leading ends of the webs, winds the same on a 5 mandrel, severs the several webs with the paper webs overlapping the metal foil webs, secures the outer ends of the paper Webs. removes the wound condenser body from the mandrel, grips the outer ends of the leading webs, and repeats this series i of operations indefinitely.

Another object is to provide such a machine which has a main shaft driven by a suitable source of power which drives appropriatev mechanism to perform the several operations in their l proper sequence, and preferably all on a single rotation of the main shaft for each condenser wound.

' 'Ihe metal foil must be severed before the paper web so as to cause the paper to overlap and insulate it. An object of this invention is to provide means for perforating the metal foil at a plurality of points along a transverse line, while it is in motion if desired, and after a predetermined length has been wound into the condenser.

Still another object is to provide a means actuated by the pegforations when they reach a predetermined point for applying a brake to the foil beyond the perforations to cause the foil to rupture along the perforated line.

These and other objects, as will hereinafter appear, are accomplished vhy this invention which is fully described in the following specification and shown in the accompanying drawings, in which- Figure 1 is a side elevation of a winding machine embodying the invention;

Fig. 2 is a front elevation of the same; Fig. 3 is a partial enlarged front elevation showing the mandrel sections and associated parts as viewed on the line 3--3 of Fig. 1;

Fig. 4 is a partial enlarged Vertical section through the mandrel operating mechanism;

Fig. 5 is a view taken on the transverse line 5-5 of Fig. 4;

4- Fig. 6 is a parta y line 6 of Fig. 2;

Fig. '7 is an enlarged sectional view on the line 1 of Fig. 6;

Fig. 8 is an enlarged top plan view on the line 8 8 of Fig. 6;

Fig. 9 is a partial enlargedvertical section on the line 9-9 of Fig. 1 showing the mechanism for drawing the wound condenser oi the mandrel;

Fig. 10 is a partial section on the line lil- I0 of Fig. 9 showing marking and sealing apparatus;

transverse section on the Fig. 11 is a partial enlarged vertical section on the line I l of Fig. 2 showing mechanism for stripping the condenser from the mandrel as well as for operating the marker and sealer;

Fig. 12 is a partial enlarged vertical section on 5 the line i2 of Fig. 2 showing a cam for operating the stripper lingers;

Fig. 13 is a partial enlarged Vertical section on line i3 of Fig. 2 showing the mechanism for severing the paper at the end of the winding op- 10 eration;

Fig. 14 is a partial enlarged front elevation on the line lil- I4 of Fig.' 13;

Fig. 15 is a partial enlarged vertical section on the line l5 of Fig. 2 showing the mechanism l5 for raising and lowering the mandrel;

Fig. 16 is a partial enlarged vertical section on the line I6 of Fig. 2 showing the cam for operating the locking and unlocking mechanism on the `driving mandrel;

Fig. 17 is a partial vertical section on the line l1 oi Fig. 3 showing the adjustable and exible drive for the mandrel;

Fig. 18 is a modied form of brake mechanism showing a cam for applying the brakes for breaking the Yfoil of two webs of foil simultaneously;

Fig. 19 is an enlarged transverse vertical section on the line I9 of Fig. 1 showing the braking mechanism;

Fig. 20 is a perspective of a modied form of brake cam which is connected by cablev and spring so as to operate in conjunction with mechanism shown in Fig. 18;

Fig. 21 is a schematic diagram of the electric connections for providing a plurality of jump sparks for puncturing the metal foil at a plurality of points;

Fig. 22 is an enlarged partial section on the line 22 of Fig. 21 showing the jump spark points;

Fig. 23 is a front elevation of the film showing a line of perlorations made by the jump sparks;

Fig. 24 is a view of the same film ruptured;

Fig, 25 isa schematic diagram of a means for applying the brake which is actuated by light passing through the perforated foil; 45

Figs. 26 to 32 inclusive are schematic diagrams showing various positions of the mandrel and of the webs during different stages of the winding operation;

Fig. 33 is a modified form of driving mechanism 50 for the mandrel which enables the mandrel to be driven at a progressively faster and then a slower rate as the winding operation progresses;

Fig. 34 is an enlarged elevation of a mechanism for mechanically perforating the metal foil at a plurality of points;

Fig. 35 is a section on the line 35 of Fig. 34 showing the mechanism in an inoperative position; and

Fig. 36 is a similar section showing the mechanism in an operative position.

One embodiment illustrated comprises a machine havinga table 31 supported on suitable legs 38, 39 and carrying a vertically extending frame 40. A series of drums or reels of a suitable insulating paper- P, P, are mounted upon the frame as well as drums of a suitable metal foil F, F. The method of mounting these is shown in Fig. 19, and will later be described.

The two central webs of paper pass over a roller 4|. One of the strands of metal foil passes over a roller 42 and the other over a roller 43. The two outside strands of paper pass over rollers 44, 45. The strands of paper are of the same width and are guided so that their ends are in the same planes. One of the strands of metal foil, however, preferably overlaps the paper insulation on one side, while the other web of foil overlaps the paper at the other side. For different types of condensers, however, the number and arrangements of webs both of paper and of foil and of their methods of overlapping and the relative widths of the several webs may be varied. The several webs then pass over guide rolls 46 and between a xed roller 41 and a yieldable roller 48. A strand of overlapping webs 49 depends from these rollers so that it is vreadily engaged by a mandrel which will now be described.

This mandrel, as shown in Figs. 3 and 4, consists of a rigid mandrel section 50 and a movable mandrel section 5|. These mandrel sections are raised and lowered bodily, as shown in the full and dotted line positions of Fig. 3. The mandrel section 5| is movable from the open or dotted line position of Fig. 4 to the closed or full line position. When the mandrel comes to rest in the full line position of Fig. 3, the fixed mandrel section 50 lies at the rear of the overlapping webs 49,l while the movable mandrel section lies on the opposite side. By raising the mandrel sections bodily from the full line position of Fig. 3 to the dotted line position, and then by closing the movable section 5|, the two sections grip the overlapping webs 49 between them. The method of raising and lowering these mandrel sections will later be described.

The fixed mandrel section 50 is carried by a fixed mandrel head 52 which is secured to a shaft 53 which is journaled in a suitable bearing housing 54 which is carried on a platform 55. -This platform is movable up and down, as will later be explained, and as shown in full and dotted lines in Fig. 3, and is guided on rods 55 slidable in guides 31 on the table 31. The method of raising this platform will later be explained, as will also the means for gripping the outer end of the mandrel section 5|. The shaft 53 is provided against endwise movement and has a bevel pinion 56 meshing with a bevel gear 51. The latter is keyed on a shaft 58 which is journaled in suitable bearings 59, 60 (Fig. 17). This shaft is driven by means of a flexible shaft 6|, 62, the latter being journaled in a suitable bearing 63 on the table 31. The shaft 62 has keyed thereon a bevel pinion 64 which is driven by a bevel gear 65 on the shaft 66 which is journaled in suitable bearings 61 carried by the table 31. The shaft C6 has a pinion 68 keyed thereon which meshes with an idler 69, the latter meshing with an interrupted gear 10 on the shaft 1|. The shaft 1| has a sprocket wheel 12 which is driven by a sprocket wheel 13 and a sprocket chain 14. The sprocket wheel 13 is keyed on a shaft 15 which is suitably journaled in the bearings in the table supporting legs. The shaft 1| is journaled in a housing 14u which encloses the chain 14 and is journaled at the opposite end on the shaft 15. This housing isadjustably held by means of a link 14b having a slot 14c through which passes a bolt 14d. The shaft 15 carries a pulley 16 which is driven by a belt 11 (Fig. 1) running over a small belt pulley 18, the latter being driven from a motor 19 through a suitable gear reduction 80. The motor is carried on a bracket 8| supported by the table legs. Thus it will be seen that with the shaft 1| running at a. constant speed the mandrel shaft 53 will remain stationary part of the time, and will be driven at a constant speed for a part of the time. The proportion of the total time during which the mandrel will remain stationary will depend upon the design of the interrupted gear 10. Likewise, the number of turns that the mandrel shaft 53 will make on each revolution of the shaft 1| depends upon the gears making up the gear train, but is xed for each gear train. Also the Geneva gears 69, 10 also insure that the mandrel 50 will stop at the same position each time.

The movable mandrel section 5| (Figs. 3 and 4) is secured to a block 82 which is pivotally mounted by a pin 83 on a mandrel head 84, the latter being carried by a stub shaft 85 which is journaled in a shaft 86 which is rotatably and slidably journaled in a sleeve 81 which is carried by a support 88 on the platform 55. A rod 89 forms a reduced section of the shaft 86, and has adjustably mounted thereon a collar 90 to which is secured one end of a tension spring 9|, the opposite end being connected to a yolk 92 which has a straight portion 92a slidably mounted in suitable bearings 93, and has a block 94 adjustably mounted on its opposite end. A tension spring 95 is connected at one end to the block 94 and at the other to a pin 96 on the platform 55. The yolk 92 is bifurcated and bears in an annular groove 91 in a sleeve 98, the latter being slidable over the shaft 86 and the mandrel head 84. The sleeve 98 bears against a pin 99 in the block 82. A tension spring holds the pin 99 against the sleeve.

The spring 95 tends to hold the various parts in the full line position of Fig. 4 in which the mandrel sections are in overlapping relation and are locked together, as will hereinafter be explained. A flexible member |0| (Figs. 1 and 6) is connected to the yoke 92 and passes over suitable sheaves |02, |03, and over a sheave |04 on a lever which is pivotally connected at |06 and carries a cam follower roller |01 which bears againsta cam |08 on the shaft 15. The follower |01 is held against the cam by means of a spring |09. The spring 95 tends to hold the parts shown in Fig. 3 against the tension of the flexible member 0| so as to maintain the latter taut at all times. As the cam |08 rotates it acts through the flexible member |0| to draw the mandrel section 5| from the position shown in Fig. 4 to the position shown in Fig. 3, and as the cam continues to rotate the spring 95 returns it to the position of Fig. 4.

The mandrel head 84 is adapted to receive the end of the mandrel section 50 as it is moved to the right in Fig. 4, while the section 5| is still in the open or dotted line position due to the fact that the spring 9| has forced the shaft 88 and the mandrel section 5| to the full line position of Fig. 4, but the flexible member |8| isstill holding the sleeve 98 in the dotted line position of Fig. 4 in which position the mandrel section 5| is still held, all in the annular dotted line position shown. As the cam |08 continues to advance, the flexible member permits the spring 95 to return the sleeve 98 to the full line position of Fig. 4, thereby moving the mandrel section into the full line position of Fig. 4, at the same time gripping the outer end of the mandrel section 50. l

At the same time the shaft 53 which carries the mandrel head 52 and the mandrel section 50 also carries a sliding mandrel head I|0 which is slidably mounted on the mandrelhead V52, and has a recess adapted to overlie and engage the outer end of the mandrel section 5| in the full line position of Fig.4 4 when the sliding mandrel head IIO is forced to the left as there shown. This movement takes place after the two mandrel sections are closed. The sliding mandrel head ||0 has an annular groove ||2 therein in which is slidably mounted a yolk I|3 having a rod I I4 which is slidably mounted in the bearing housing 54 and parallel to the shaft 53. A spring ||5 between the housing and the sliding mandrel head normally forces the latter outwardly to the position shown in Figs. 3 and 4.

A flexible member IIS is secured at one end to the yolk I I3 and passes over suitable sheaves Il'l, ||8 (Fig. 3), and is connected to a lever ||9 (Fig. 16), which is pivotally connected at |20 to the table supports. The lever ||9 is heid in contact with a cam |2| on the shaft 15 by means of a tension spring |22. Thus at a predetermined point in the rotation of the shaft 15, the cam |2| draws the sliding mandrel head ||0 back against the action of the spring ||5, and holds it there until the lever ||9 suddenly drops off the point of the cam, thereby releasing the head ||0 which is then returned to the spring ||5 to the full line position of Fig. 4, thereby locking the end of the mandrel section 5| which has just closed to the full line position of Fig. 4. It is open just long enough to allow the mandrel section 5| to close .and then be engaged.

For raising the platform 55 from the full line position to the dotted line position the platform is provided with a centrally located pin |23 which passes through the table 31 and is adapted to be engaged by a screw |24 adjustably carried by a lever |25 (Figs. 3 and 15) which is fulcrumed A at |26, the opposite end being pivotally connected to a link |21. The shaft 15 passes through a slotted opening |28 in the link |21 so that the link is guided thereby. The link carries a cam follower |29 which rides on a cam |30 which is keyed on the shaft 15. Thus the platform 55 remains in the full line position for more than half each revolution of the shaft, but is raised to the dotted line position for a predetermined portion of each revolution.

Starting with the parts as shown in full lines in Fig. 3, the mandrel section 50 lies back of the depending ends 49 of the webs which go to make up the condenser. The mandrel section 5| is retracted and open as shown in dotted lines in Figs. 3 and 4. As' the shaft 15 rotates, the cam |08 (Fig. 6) permits the flexible member |0| to be drawn back under the action of the springs |09 and 95, thereby forcing the shaft 85 to the right. At the same time the cam |30 (Fig. 15) passing under the follower |28 lifts the platform 55 from the full line position (Figs. 15 and 3) to the dotted line position. In the latter position the two mandrel sections 50, 5| lie one on each sidev of the lower ends of the webs 49. At this time the sliding mandrel head ||0 (Fig. 4) is retracted, as previously described. As the yoke 92 continues to move to the right, the shaft 88 moves with it until the collar 90 strikes the sleeve 81. This fixes the movement to the right of the mandrel section. 5I. 'I'he mandrel head ||0 then is moved lby the spring II5, as previously described, to lock the mandrel section 5|.

As the yoke 92 continues to move to the right, it stretches the spring 9| and moves the mandrel section 5| from lthe dotted line position of Fig. 4 to the full line position, thereby causing the sleeve 91 to engage the pin 99 and to close the mandrel section 5I on the mandrel section 50. The cam |2I (Fig. 16) then releasesthe tension on the flexible member H6, thereby permitting the spring I5 to return the sliding mandrel head ||0 'to the position shown in Fig. 4. in which, as previously described, it engages and locks the outer end of the mandrel section 5| to the mandrel section 50. At the same time the outer end of the mandrel section 50 is locked to the mandrelsection 5| in the mandrel head 84.

Following this the mandrel shaft 53 is driven by the gear chain of Fig. 17 beginning with the interrupted gear 10. The two mandrel sections are locked together and are driven one from the shaft '53, the mandrel head 84 rotating on its own stub shaft 85. This stub shaft is held in the shaft 86 by means of a dog point set-screw Sii operating in an annular groove 55a in the shaft 85.

Asy the mandrel sections 50, 5| rotate the paper and foil webs are wound about the mandrel, suitable tension being maintained on each web by means of brakes |3I, |32, |33, |34, |35 and |35, as shown in Fig. 1. As this winding continues the cam |30 (Fig. 15) rotates so as to return the platform 55 to its lowered position while the winding is continued. The winding then proceeds so long as the mandrel is driven by the toothed portion of the gear 10. When the winding is nearly complete metal foill webs are perforated at a plurality of points along transverse lines by apparatus shown in Figs. l and 2l to 24 inclusive. Thus the foil webs F', F pass over metal guides |31 which are grounded, as indicated in Fig. 2l, and have grooves |38 lying transversely of the metal web. These guides are carried on suitable metal supports |39 which are .secured to the frame 40, and these carry suitable insulating blocks |40 which lsupport metal jump spark points |4| which are alternately staggered to form a row with-the points immediately over the groove |38 and are spaced about .050" above the metal foil F'. Each of these points is'connected through a suitable insulated lead |42 to a high resistance |43, say one megohm.

The opposite ends of these resistances are then connected to a common lead |44 which is connected to one side of a suitable source of D. C. voltage |45 which is preferably ofthe order of 3500 volts obtained by rectifying an alternating current. The opposite side of this source is connected through a lead |46 with a brush |41 which bears on a cylindrical block of insulation |48 which is keyed on a shaft |49. This shaft, as shown in Fig. 1, has a gear |50 keyed thereon and meshing with a gear |5|`of the same size keyed on the shaft 1|. It will be understood, however, that if desired the shaft |49 may be dispensed with and the block |48 either of the shafts 1| or 15.

'I'he block |46 carries a segment |48 of copper or the like, and a grounded brush |52 bears on the block |48 and is so located that the segment |488L will lose its contact with the brush |41 before making contact with the brush |52. A brush |53 lies midway between the brushes |41 and |52 so that the metal segment can connect the brush |53 with either the brush |41 or the brush |52. The brush |53 connects through a lead |53 and leads |54 with a series of condensers 55, each preferably having a capacity of .02 mfd. The opposite side of each of these condensers is connected to one of the leads |42 so as to place each condenser in parallel to one of the resistances |43.

Thus as the segment rotates in a counterclockwise direction, as shown in Fig. 21, the condensers |55 are charged, and as the segment continues to rotate it loses contact with the brush 41 and makes contact with the brush |52, thereby grounding one side of the condenser and causing it to discharge to ground on the opposite side, as shown in Figs. 21 and 22 across the gap between the points |4| and the metal foil. The resistances |43 cause all condensers to be charged about equally in a short interval of time, and prevent each condenser from discharging through other than its corresponding needle point. Without these all condensers would tend to discharge through a single point. In this way, each condenser discharges independently of the others through its own point, but they al1 discharge at the same time and as the points are arranged along a transverse line the discharges serve to puncture the foil at a Aplurality of points, as shown at F2 in Fig. 23. The condensers |55 and resistances |43 are enclosed within a suitable housing |56. This provides not only a very simple device for perforating the foil and one which requires but little space between the reels, but it operates just as well with the metal web in motion as when it is at rest.

Breaking the metal foil It is now necessary to break the metal foil just before the winding is completed so that the trailing end of the metal web will lie within and be overlapped by the ends of the paper insulating webs. Also it is necessary that the ends of the paper webs shall extend beyond the metal foil webs on the advancing end of the new condenser.

Breaking is preferably accomplished by holding the metal webs back of the punctured line F2, while the portion in advance of this line continues to be wound, thereby separating and completely severing the two, as shown in Fig. 24. We prefer to accomplish this by means of light placed on passing through the line of holes F2. Thus iny Fig. 25 an electric lamp |51 lighted in any-well known manner is placed at a point adjacent that at which the break is to occur. A photoelectric cell |58 is placed on the opposite side of the metal web so that as the line of holes F2 comes between the source of light and a slit |59 in the front of the photoelectric cell, light from the source |51 will pass into the cell |58, thereby energizing it and causing it to function in a well known manner. Current from the cell |58 then passes into a suitable glow tube amplier and relay |60 of a well known type, and this relay current passes through leads |6| to a solenoid |62` which then becomes energized and acts to` draw a cable |63 to operate a. brake on the metal web. as will now be described. A switch |64 in a glow tube circuit of the amplier is necessary to release the relay once it has been started by the photoelectric cell.

In Fig. 19 is shown the mechanism for adjustably supporting the reels, particularly for the metal webs and the brake mechanism for braking the same. This consists of an axle |68 having at one end a threaded portion |69 adapted to be screwed through a casting |10 which is secured to the frame 40 as by means of screws |1|. The end |69 has a hand wheel |12 secured thereon and a locking wheel |13 is likewise screwed on the reduced portion |69. Thus a very nice adjustment of the axle |68 with respect to the frame |10 is obtained. The opposite end |68n of the axle is reduced and carries a flange reel |14 on suitable ball bearings. This reel is adapted to receive a roll of metal foil |15 wound or. a hollow core |16 of aluminum or similar soft material, the latter having a sliding fit on the hub of the reel |14.

A disk |11 is mounted on a split collar |18, the latter with the disk |11 being adapted to be slid over the hub of the reel and to be gripped thereto. The collar carries a series of pins |19 which may be forced into the soft metal core |16 so as to lock the core and roll of metal on the reel. A clutch consisting of a stationary clutch member |80 and a movable member |8| are mounted on the axle |68, the stationary member having an arm |82 passing over a pin |83 which is carried by the frame 40. The members |80, |8| have complementary spiral surfaces, as shown in Fig. 20, and the movable member |8| bears against a collar |84 which is secured on the axle |68. The member |8| has an extension |8|n to which is secured at one side of the brake cable |63 which acts in opposition to a tension spring |85.

Thus it will be seen that when the light from the source |51 passes through holes F2 of the metal web and energizes the photoelectric cell `|58, the solenoid |62 becomes energized and ing means operated by a cam |86 on the cam shaft 15 which operates a cam follower lever |81 pivotally mounted at |88 on a member |89 slidable on a suitable bracket |90 carried by the table legs and adjustably held by means of an adjusting screw 9|. The lever |81 is connected to a flexible member |63a which in this form operates to release the clutch member |8|, the latter being suddenly set by the spring |85 as the lever |81 suddenly falls off the ledge of the cam |86. The cable |63n serves to release the brake. 'I'his is just the reverse of the method of Fig. 19 where the pull of the cable set the brake and the spring |85 released it. For this reason the cable and spring are placed on the opposite side of the extension |8|. The point at which the break occurs can be very nicely timed by means of the screw |9 The reels P are similarly mounted except that no brakes for Cil stopping these reels are provided as in the case of the reels F.

Severino the wound condenser After breaking the metal foil webs and just prior to finishing winding of the condenser, it is necessary to sever the paper webs. This is done by apparatus shown in Fig. 13. A cam |92 is keyed on the cam shaft and serves during each revolution of the cam shaft to lift a weighted link |93 which is guided at the bottom on the ram shaft and pivotally mounted at |94 to a lever |95 .pivotally mounted at I 90, the opposite end having an end |91 which is adapted to engage an ear |98 on a member |99 rotatably mounted on an axle 200 which is suitably supported under the table 31.

The member |99 has a laterally extending finger which is normally held in engagement with a pin 202 on another member 203 which is likewise rotatably mounted on the shaft 200. The member 203 carries anarm 204 which passes through an opening 31b in the table 31 and through an opening 205 in a knife 205, the latter being slidably mounted in a guide 208 which is suitably carried by the frame 40. The arm 204 is normally held retracted in the full line position by means of a tension spring 201, while the member' |99 is normally in the position shown by means of a spring 208. The knife 205 is above the level of the finished condenser so that when projected forward to the dotted line position of Fig. 13, it will sever the paper webs leaving the forward end of the next condenser hanging, as shown in Fig. 26. The method of holding the outer ends of the webs of the .wound condenser will presently be explained.

From the foregoing it will be seen that as the weighted link |93 rises it will depress the car |98 to the lower dotted line position shown. As the end |91 slips off this ear'the member will snap back to the position shown in full lines, but will be stopped by the action of the stronger spring 201. As the cam |92 continues to revolve the link |93 vwill slip suddenly off the high point of the cam, and will drop, and as it does so the end |91 will strike the lower portion of the ear |98, thereby throwing the arm 204 forward from the full line position to the dotted line position, at the same time throwing the knife 205 forward to the dotted line position, thereby severing the paper webs.

Mechanism for holding, gluing and marking the outer envelope of the condenser In Figs. 9, 10 and 11 is shown apparatus for y holding and gluing the outer ends of the concontact with the cam 2|5.

The shaft 209 has an arm 2I1 which carries a wick 2|8' to which glue or other suitable adhesive Y is conveyed through a pipe 2|9 from a suitable receptacle (not shown). The .cam 2|5 is so timed as to force the wick 2|8 into contact with the wound condenser about one turn or so before it is completely wound. This causes the outer lay- 'ers of the paper to adhere, and also serves to hold the condenser after the webs are severed and to insure that they are pressed down so as to bc held by the glue which it also applies.

At the same time a narrow band of color C is applied to the ground end of the condenser (Fig. 29). After severing the wick 2|8 continues to bear on the condenser while tl ic lever is revolving until the winding is completed. This color is applied through a suitable wick 220 on the arm 2|1, receiving ink from a receptacle 22|.

Stripping mechanism lower 230 which engages the cam 23| on the camv shaft 15.

Thus as the cam shaft 15 rotates the fingers 222 move from the dotted line position to the full line position of Fig. 10. In the latter position they lie one on each side of. the condenser C, as shown in Fig. 30. As the cam shaft continues to rotate the mandrel head 98 moves to the left, as shown in Fig. 31, thereby withdrawing the mandrel section 5| from the condenser which is prevented from movingy off the mandrel section 5| by one of the fingers 222. At the same time, as

.has been previously explained, the mandrel section'5l swings to one side so as to be out of the way of the condenser C as it is moved longitudinally off the mandrel section 50, as shown in Fig. 32. As the upper fingers continue to move to the left, the wound condenser shown in dotted lines `drops off the end of the mandrel section 50 into a suitable receptacle.

The means for moving the upper fingers longitudinally is provided, as shown in Fig. 9, by a. flexible cable 232 which is attached to the sleeve 223, and passes over sheaves 233, 234 (Fig. 11) and under a sheave 235. and is then attached at 236 to the underside of. the table 31. The sheave 235 is carried on a lever arm 231 which is pivotally mounted on the rod |20. The lever 231 carries a cam follower 238 and bears against the cam 239 on the shaft 15. Thus on each rotation of the cam shaft the fingers, after moving up to the full line position of Fig. 10, are moved to the left, as shown in Fig. 32, so as to strip the condenser off the mandrel section 50. The parts are now in the position of Fig. 26, and are ready to repeat the series of operations previously described.

The winding mechanism shown in Fig. 17 provides a speed of. rotation for winding the condenser which is uniform throughout. For large eondensers, however, it is desirable that the rate of winding start slowly, increase as the winding progresses, and decrease as the winding nears completion. By using a pair of matched elliptic gears 09h, 69 and intermediate gears 69, 69d, (Fig. 33) in the gear train driving the mandrel shaft 53, the speed of this shaft can be made slow at the start, increase as the winding progresses and decrease as the winding is completed, thereby greatly decreasing the time required to wind the the metal web F.

condenser but keeping the rotative speeds low at the instant of starting and finishing.

In Fig. 34 is shown a modified form of device for perforating the metal web. 'I'his consists of a plate 240 beneath which lies a movable arm 24|, which is suitably journaled as shown in Fig. 34, is mounted on a shaft 242 and carrying a spring member 243 which has a series of openings 244. A series of needle points 245 are carried by the member 24|, each adapted to pass through an opening 244. The underside of the plate 240 has a recess 246 to receive these needle points. The shaft 242 carries an operating lever 241 to which is attached a flexible cable 248 which may be operated in any suitable manner not shown to cause the needle points to puncture This must be done while the web remains stationary and after the metal webs have been braked.

To permit adjustment of the lengths of the webs, we wind the webs back and forth over rollers 4| to 45 and guide rolls 46 which are increased in number and aremade adjustable so as to provide webs of different lengths for different capacity condensers. This showing is obvious and is omitted for sake of clearness. 'I'he metal guides |31 may also be made adjustable for different points of cut-off.

It is found that this method of winding produces condensers which run far more uniform in capacity than those wound by hand due largely to the more uniform tension on the webs, the more uniform overlap of the webs, and the more uniform lengths of the metal webs.

We claim:

1. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding the webs including a positively driven mandrel made up of two sections adapted to receive said ends of the webs between them, means for moving at least one of said sections to cooperate with the other to grip the ends of the webs for winding the condenser, and means for disengaging the mandrel sections one at a time from the condenser when wound.

2. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding the webs including a positively driven mandrel made up of two sections adapted to receive said ends of the webs between them, means for moving at least one of said sections to cooperate with the other to grip the ends of the webs for winding the condenser, and means for disengaging the mandrel sections one at a time from opposite ends of the condenser when wound.

3. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, and means for winding the webs including a mandrel made up of two sections, one of which is rigidly mounted on a shaft at one side while the other is separable from the rigid section and mounted on another shaft in axial alignment with the rstmentioned shaft, the other shaft being movable endwise, so as to permit the webs to be engaged between the sections as the movable section is moved to a position adjacent the rigid section for winding.

4. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding the webs including a mandrel made up of two sections adapted to receive said ends of the webs between them, at least one of said sections being movable to cooperate with the other to grip the ends of the webs for winding the condenser, means for disengaging the mandrel sections from the condenser when wound, means for severing the webs at the completion of the winding operation so that the ends of the paper webs overlap the ends of the foil webs, means for separating the mandrel sections, means for bringing the ends of the webs and mandrel sections into juxtaposition to enable the mandrel sections to close on the webs, and means for closing the mandrel sections to grip the webs.

5. In a. condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding the webs including a mandrel made up of two sections, one of which is rigidly mounted on a shaft at one side while the other is separable from the rigid section and mounted on another shaft in axial alignment with the first-mentioned shaft, the other shaft being movable endwise, so as to permit the webs to be engaged between the sections as the movable section is moved to a position adjacent the rigid section for winding, means for severing the webs at the completion of the winding operation, means for separating the mandrel sections, means for bringing the ends of the webs and mandrel sections into juxtaposition to enable the mandrel sections to close on the webs, and means for closing the mandrel sections to grip the webs.

6. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs hanging vertically in adjacent relation, and means for winding the Webs includingr a mandrel made up of two sections adapted to receive said ends of the webs between them, at least one of said sections being movable to co-operate with the other to grip the ends of the webs for winding the condenser, fingers movable to hold the condenser against endwise movement, means to withdraw one mandrel section from the condenser while held by the fingers, and means for moving the fingers to strip the condenser from the other mandrel section.

7. A condenser Winding machine according to preceding claim 5 in which there is a common mechanism for operating all said means.

8. A condenser .winding machine according to preceding claim 5 in which. a shaft is operably connected to the said means to drive them to perform the several operations of winding a condenser on each rotation of said shaft.

9. The method of winding a condenser comprising leading a plurality of webs of metal foil and dielectric paper to a common point wherein they hang vertically, gripping the lower ends of said webs, winding them into a condenser, Weakening the metal foil webs, holding the metal foil webs back of the line of weakening so as to cause the foil to rupture at said line, and severing the, paper web.

10. The method of winding a condenser com-y prising leading a plurality of webs of metal foil and dielectric paper to a common point wherein they hang vertically, gripping the lower ends of said webs, winding them into a condenser, puncturing each metal foil web at a number of points along a transverse line by a series of high potential discharges, holding the metal foil webs back of the line of weakening so as to cause the foil to rupture at said line, and severing the paper web.

11. The method of winding a condenser comprising leading a plurality of webs of metal foil and dielectric paper to a common point wherein they hang vertically, gripping the lower ends of said webs, winding them into a condenser,

puncturing each metal foil web at a number of points along a transverse line by a series of high potential discharges while the web is in motion, holding the metal foil webs back of the line of weakening so as to cause the foil to rupture at said line, and utilizing light passing through the holes in one of the metal foil webs to hold the metal foil webs.

12. In a method of winding condensers, the step of weakening the metal web comprising puncturing the metal web at a plurality of points by a high potential static discharge to the metal web along a line where severance is desired, and

applying tension to the/ metal web on both sides of the line of weakening to cause the web to rupture along this line.

13. In a method of winding condensers, weak: ening a metal web by producing a series of holes therein along a line of where severance is desired, passing light through said holes while the web is in` motion, utilizing the light passing through said webs to hold the web back of the line-of holes to cause the web to rupture along said line.

14. In a condenser winding machine, means for winding a plurality of webs of metal foil and paper,V means for puncturing each metal web along a transverse line while the webs are in motion, and means operated by light passing through the punctured portion of the web to hold the web back of the line of puncture to cause the web to rupture along said line.

15. In a condenser Winding machine, means for winding a plurality of Webs of metal foil and paper, a plurality of points, a ground opposite said points, the ground and points lying on opposite sides of the metal web, means for energizing each point separately to cause an electric spark to jump from each point to ground simultaneously to puncture the metal foil, and means for holding the metal foil back of the line of puncture to cause the metal web to rupture along said line.

16. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding thev webs including a positively driven mandrelmade up of two relatively longitudinally movable sections one of which is hinged, means for moving said mandrel sections and the free ends of the webs into contact with each other, and means for disengaging the mandrel from the wound condenser.

17. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for windingA the webs including a positively driven mandrel made up of two relatively longitudinally movable sections one of which is hinged, means for moving said mandrel transversely to its axis into contact with the free ends of the webs, means for returning themandrel to normal position. after the ends of the web are engaged, and means for disengaging the mandrel from the wound condenser.

18. In a condenser Winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs hanging vertically in adjacent relation, and means for winding the webs including a mandrel made up of two relatively longitudinally movable sections adapted to receive said ends of the webs between them at least one of said mandrel sections being hinged, means fdr moving at least one of said sections to cooperate with the other to grip the ends of the webs for winding the condenser, means for locking the two mandrel sections against separation, and means for disengaging the mandrel sections from the condenser when wound.

19. In a condenser winding machine, a supply of paper, a supply of metallic foil, a rotatable arbor on which the paper and foil are adapted to be wound, a cam shaft and cam, and gears to produce intermittent rotation of said arbor, means for severing the foil and paper, and operating means for said'severingmeans including a braking means for the foil having a part thereof associated with and adjustable relative to said cam for causing severance of the foil prior to the severance of the paper.

20. In a condenser winding machine, a plurality of reels for holding webs of metal foil and paper, means for assembling these webs in juxtaposition in a predetermined order with the ends of the webs in adjacent relation, means for winding the webs including a mandrel made up of two relatively longitudinally movable sections one of which is hinged, a drive shaft and gear means in connection with the mandrel adapted to produce a positive thereof, means for moving said mandrel transveisely to its axis into contact with the free ends of the webs, means for returning the mandrel tonormal position after the ends of the web are engaged, and means for disengaging the mandrel from the wound condenser.

' y EUGENE M. KILE.

SIMON KAIN.

intermittent rotation 

